This Breitbart report http://www.breitbart.com/london/2017/05/16/1-in-5-child-deaths-in-london-borough-caused-by-parents-being-close-relatives/ contains some truths that are too inconvenient for the BBC to report.
'The council's report found between 2008 and 2016, 19 per cent of child deaths in the borough were caused by infants being born to "consanguineous relationships" — marriage or otherwise sexual relations between couples who are first cousins or closer.'
That's in Redbridge, but I presume similar problems will be occurring in other areas with large populations of Pakistani heritage.
Maybe someone, obviously not the BBC could also investigate the incident rate of birth abnormalities and genetic diseases amongst the same population.
I wonder if that cost is ever factored into the cost of immigration from the Muslim part of the Indian subcontinent.